Mechanical sweeper



FIG. 1 is a front perspective view of a mechanical sweeper;

FIG. 2 is a top elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

In FIGS. 1 through 6, the broken lines showing the mechanical sweeper and associated details are for illustrative purposes only and form no part of the claimed design. 

The ornamental design of mechanical sweeper, as shown and described. 